Home / 2,887.11-4,331.13-1,243.68

Finding the Fourth Proportional to 2,887.11, 4,331.13 and 1,243.68

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Solution

The fourth proportional to 2,887.11, 4,331.13 and 1,243.68 is: 1,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.11 : 4,331.13 = 1,243.68 : x
  2. Step 2: Convert to fraction form
    2,887.11/4,331.13 = 1,243.68/x
  3. Step 3: Cross multiply
    2,887.11x = 4,331.13 × 1,243.68
  4. Step 4: Simplify right side
    2,887.11x = 5,386,539.76
  5. Step 5: Solve for x
    x = 5,386,539.76/2,887.11
  6. Step 6: Final answer
    x = 1,865.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.